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T
tsingtao
Guest
New product at www.gearboxinc.com
Whatman Gd/x sterile filters. 2.50 with any other purchase.
See you there.
Whatman Gd/x sterile filters. 2.50 with any other purchase.
See you there.
Lift Chief
New member
2.5?
I thought they came in .2 and .45u?
I thought they came in .2 and .45u?
T
tsingtao
Guest
they are .45um and are $2.50 each. 
Just be warned, those are junk. They're the 13mm wide filters versus the 25mm or 33mm ones you see for sale elsewhere. There's a reason they're cheaper.
Also, they aren't even sterile sealed. When I bought a dozen from gearboxinc.com, they were shipped loose in the box. They only have about 1/8 the total filter area of the larger ones you get with the kits I've seen. I used eight of them just to filter 50ml of Fina. I've done 100ml of Fina with one of the a single, better filters for $7 each. So, $7 for the better filter versus $40 ($2.50 per filter * 8 * 2) for those things per 100ml. It's false economy to buy the smaller filters.
What they are useful for is if you can sterilize them by running some BA through them then use one to refilter oil from an underground lab. I used the rest of mine for that, and I was able to refilter about 50 ml with each.
Also, they aren't even sterile sealed. When I bought a dozen from gearboxinc.com, they were shipped loose in the box. They only have about 1/8 the total filter area of the larger ones you get with the kits I've seen. I used eight of them just to filter 50ml of Fina. I've done 100ml of Fina with one of the a single, better filters for $7 each. So, $7 for the better filter versus $40 ($2.50 per filter * 8 * 2) for those things per 100ml. It's false economy to buy the smaller filters.
What they are useful for is if you can sterilize them by running some BA through them then use one to refilter oil from an underground lab. I used the rest of mine for that, and I was able to refilter about 50 ml with each.
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